Bridwell, N. (2000). Clifford´s: School house (1a. ed.). Scholastic.
Chicago-čujuhus (17. p.)Bridwell, Norman. Clifford´s: School House. 1a. ed. New York: Scholastic, 2000.
MLA-čujuhus (9. p.)Bridwell, Norman. Clifford´s: School House. 1a. ed. Scholastic, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.